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Evaluation of Thermal and Thermochemical Properites the Well Bottom Zone

T. K. Akhmedzhanov and D. K. Baiseit


The performance of oil and gas wells and absorption capacity of injection depend mainly on the permeability of rocks, pitting the reservoir. The permeability of rocks of the same layer can be dramatically altered in its different zones or areas. Sometimes when the general good permeability reservoir some wells reveal a zone of low permeability, resulting in deteriorating the flow of oil and gas to them. The natural permeability of the rocks under the influence of other reasons can also deteriorate over time. Thus, the well completion drilling bottom-hole zone, they are often contaminated decay clay solution, which leads to clogged pores and reduce the natural reservoir permeability. With the exploitation of oil and gas wells in the permeability of the rock face zone can rapidly deteriorate due to the blockage of pores and the waxy resinous deposits, and clay particles. The permeability of rocks improve bottom-hole by artificially increasing the number and size of drainage channels, increased fracturing of rocks, as well as by removing the wax, tar and dirt deposited on the walls of the pore channels. Methods for increasing the permeability of the rock face zones of wells can be divided into chemical, mechanical, thermal, and physical. Often the best results, these methods are used in combination with each other or in series1.


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